A full assessment of the efficacy of implementing a Origin-User Equilibrium approach for the North Carolina Statewide Model (NCSTM) was undertaken by EA Harper Consulting under contract to WSP/Parsons Brinckerhoff. Work included background research on the theory of OUE assignments, development of a testing methodology, execution and documentation of the tests, and recommendations for the most effective use of OUE in the NCSTM.